meson: rename make-man-rules.py to update-man-rules.py

The name of the helper didn't match the name of the meson target, which was
always confusing me. With this change, we consistenly use "update" to
re-generate things which we otherwise keep in vc, and "make" for things
which are generated during each build.

man/meson.build

@@ -217,7 +217,7 @@ if git.found()
                 output : 'update-man-rules',
                 command : ['sh', '-c',
                            'cd @0@ && '.format(meson.build_root()) +
-                           'python3 @0@/tools/make-man-rules.py $(git ls-files ":/man/*.xml") >t && '.format(project_source_root) +
+                           'python3 @0@/tools/update-man-rules.py $(git ls-files ":/man/*.xml") >t && '.format(project_source_root) +
                            'mv t @0@/rules/meson.build'.format(meson.current_source_dir())],
                 depend_files : custom_entities_ent)
 endif

man/rules/meson.build

@@ -1,4 +1,4 @@
-# Do not edit. Generated by make-man-rules.py.
+# Do not edit. Generated by update-man-rules.py.
 # Update with:
 #     ninja -C build man/update-man-rules
 manpages = [

tools/update-man-rules.py

@@ -50,7 +50,7 @@ def mjoin(files):
     return ' \\\n\t'.join(sorted(files) or '#')
 
 MESON_HEADER = '''\
-# Do not edit. Generated by make-man-rules.py.
+# Do not edit. Generated by update-man-rules.py.
 # Update with:
 #     ninja -C build man/update-man-rules
 manpages = ['''